Defroster



M. B. RGY

DEFROSTER Dee. 17, 193s.

Filed Sept. l2, 1934 ATTORNEYS.

Patented Dec. 17, 1935 j A A 2,024,878

UNITED STATES PATENT OFFICE DEFROSTER Michael B. Roy, Bridgeport, Conn. Application September 12, 1934, Serial No. 743,774

3 Claims.

An object of the invention vice of the character stated is to provide a dewhich is of simple and durable structure and which may be easily and quickly applied and designed to use the exhaust gases from the engine of an automobile for the purpose of keeping the wind shield at such degree of temperature as to prevent the accumulation of frost thereon and to remove frost therefrom in the event that such frost has previously accumulated thereon.

With the above object in View the device consists of a transparent plate mounted upon suction cups which may be applied to the wind shield support a pipe section and t there being brackets upon the plate which here being a shield applied tothe said pipe section. The pipe section is provided with the exhaust and for leading pipe section,

connections for leading in the same out. The

between the brackets, is approximately parallel with the plane of the plate and is formed in branches which are curved or corrugated thereby compelling the heated gases to travel in tortuous courses thro ugh the pipe'section so that the heat radiating from the pipe section and the heated gases may impinge upon the transparent plate and the wind shield and prevent the formation of frost or remove frost therefrom. Other objects and advantageous characteristics will be readily understood fro m the following description and claims when read in connection with the drawing accompanying and forming part of the specification, in which Figure 1 is a fragmentary side elevational view of a wind shield with the defrosting device applied and parts thereof broken away.

Figure 2 is a horizontal se the line 2-2 of Figure 1.

Figure 3 is a transverse se the line 3-3 of Figure 1.

ctional View cut on ctional view cut on Figure 4 is a similar view cut on the line 4-4 of Figure 1.

Figure 5 is a plan view of a plate with a modied form of pipe section thereon.

Figure 6 is a plan view of a plate with yet another modified form of pipe s ection thereon.

Similar numerals of reference designate corresponding parts in all of the views of the drawthe automobile machine is and is shown at I. ts of a glass plate (Cl. Ztl-40.5)

2 mounted upon suction cups 3 and lsaid suction cups may be applied to the wind shield I in a usual manner and as best shown in Figures 2, 3 and 4 of the drawing. Brackets 4 are mounted upon the plate 2 and a plate 5 is connected with I one of the brackets. The pipe 5 is provided with a valve 6 and a union I by means of which it is connected with the exhaust gas in inlet pipe 8. The suction cups 3 are secured to the frame 30 by means of the arms 3l and manifestly as shown in l0 Figure 2 the plate 2 will be only slightly positioned with a space from the windshield I of the vehicle. This arrangement will cause the heat that passes through the members 9 and I0 to heat the plate 2 and this heat in turn will be imparted l5 to the Windshield thereby deirosting said windshield.

As shown in Figures 1 to 4 inclusive the pipe 5 is connected with a pipe section having branches 9 and l0 which lie between the brackets 4 and 20 which are spaced from the plate 2. A shield II is provided with clips I2 which engage upon the branches 9 and I 0 and form supports for holding the shield so that heat passing through the branches is reflected against the shield upon the 25 plate 2 and the wind shield I. A pipe I3 connected with the other bracket 4 and is provided with a union-nut I4 by means of which it is connected with the exhaust or outlet pipe I5.

In operation the heated gases from the pipe 8 30 enter the pipe 5 and pass into the branches 9 and I0 of the pipe sections and heat the plate and wind shield as hereinbefore indicated. The heat thus applied prevents the accumulation of frost and removes any frost which may have 35 deposited upon the wind shield. The heated gases pass out of the pipe section through the pipes I3 and I5.

In the form of the device as shown in Figure 5 of the drawing, the branches I6 and Il of the 40 pipe section are corrugated and extend approximately parallel with the plane of the plate 2. In this form of the invention the heated gases are impeded or deterred in passing through the branches of the pipe section and hence ample 45 time elapses to permit the heat to radiate from the branches to the wind shield for the purposes intended.

In the form of the invention as shown in Figure 6 of the drawing the pipe branches I8 and 50 I9 are coiled to yet further impede the progress of the passage of the heated gases through the said branches.

From the above description taken in conjunction with the accompanying drawing it will be seen 55 that an eiiicient defrosting device is provided and that the same may be used to advantage for automatically maintaining the Wind shield of an automobile machine free from the accumulation and deposit of frost upon the surface thereof which if permitted to accumulate materially interferes with the scope of vision of the operator of the automobile machine.

What I claim isz- 1. A defrosting device comprising a transparent plate, a frame secured on the ends of the plate, brackets secured to the frame and suction cups mounted on the brackets whereby said plate may be attached in close proximity to a Vehicle windshield, a heating element mounted in rear of the plate and having conduits secured to the exhaust of the vehicle and comprising a series of pipes connected with the conduits whereby the exhaust elements heat the plate.

2. A defrosting device comprising a transparent plate, means for securing the plate in close proximity to the windshield of a vehicle and a. heating device arranged in rear of the plate and in close proximity to said plate and adapted to conduct heat from the exhaust of the vehicle so that such heat is imparted to the plate and in turn to the Windshield.

3. A defrosting device comprising a transparent plate, means for attaching the plate to a vehicle windshield with but a slight intervening space between said plate and Windshield, and a heating unit secured to the plate and comprising pipes in communication with the exhaust elements of the vehicle whereby such elements may be imparted to the plate and in turn to the Windshield.

MICHAEL B. ROY. 

